三个优质水稻不育系生育特性的比较

摘要

观测结果表明:在供试的3个优质不育系中,以"IR58025A"的播始历期最长(76～99d),"东B11A"次之(69～97d),"金23A"最短(50～78d);"东B11A"和"金23A"的柱头活力及柱头外露率均高于"IR58025A";"东B11A"的开花最高峰最明显,但其始花期比另2个不育系迟1d;"金23A"和"IR58025A"的花粉典败率达100%,"东B11A"的典败率为98.08%,圆败率为1.92%.